Home / 305,864.16-422,172.72-171,771.36

Finding the Fourth Proportional to 305,864.16, 422,172.72 and 171,771.36

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Solution

The fourth proportional to 305,864.16, 422,172.72 and 171,771.36 is: 237,089.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,864.16 : 422,172.72 = 171,771.36 : x
  2. Step 2: Convert to fraction form
    305,864.16/422,172.72 = 171,771.36/x
  3. Step 3: Cross multiply
    305,864.16x = 422,172.72 × 171,771.36
  4. Step 4: Simplify right side
    305,864.16x = 72,517,182,269.30
  5. Step 5: Solve for x
    x = 72,517,182,269.30/305,864.16
  6. Step 6: Final answer
    x = 237,089.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.